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  <title>Returns the error code from last connect call</title>

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</div><hr /><div id="mysqli.connect-errno" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">mysqli::$connect_errno</h1>
  <h1 class="refname">mysqli_connect_errno</h1>
  <p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">mysqli::$connect_errno</span> -- <span class="refname">mysqli_connect_errno</span> &mdash; <span class="dc-title">Returns the error code from last connect call</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-mysqli.connect-errno-description">
  <h3 class="title">说明</h3>
  <p class="para">面向对象风格</p>
  <div class="fieldsynopsis"><span class="type">string</span> <var class="varname"><a href="mysqli.connect-errno.html">$mysqli-&gt;connect_errno</a></var>;</div>

  <p class="para">过程化风格</p>
  <div class="methodsynopsis dc-description">
   <span class="type">int</span> <span class="methodname"><strong>mysqli_connect_errno</strong></span>
    ( <span class="methodparam">void</span>
   )</div>

  <p class="para rdfs-comment">
   Returns the last error code number from the last call to 
   <span class="function"><a href="function.mysqli-connect.html" class="function">mysqli_connect()</a></span>.
  </p>
  <blockquote class="note"><p><strong class="note">Note</strong>: 
   <p class="para">
    Client error message numbers are listed in the MySQL 
    <var class="filename">errmsg.h</var> header file, server error message numbers
    are listed in <var class="filename">mysqld_error.h</var>. In the MySQL source
    distribution you can find a complete list of error messages and error
    numbers in the file <var class="filename">Docs/mysqld_error.txt</var>.
   </p>
  </p></blockquote>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-mysqli.connect-errno-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   An error code value for the last call to <span class="function"><a href="function.mysqli-connect.html" class="function">mysqli_connect()</a></span>, if it failed.
   zero means no error occurred.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-mysqli.connect-errno-examples">
  <h3 class="title">范例</h3>
  <div class="example" id="example-1624">
   <p><strong>Example #1 <var class="varname"><var class="varname">$mysqli->connect_errno</var></var> example</strong></p>
   <div class="example-contents"><p>面向对象风格</p></div>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$mysqli&nbsp;</span><span style="color: #007700">=&nbsp;@new&nbsp;</span><span style="color: #0000BB">mysqli</span><span style="color: #007700">(</span><span style="color: #DD0000">'localhost'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'fake_user'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'my_password'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'my_db'</span><span style="color: #007700">);<br /><br />if&nbsp;(</span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">connect_errno</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;die(</span><span style="color: #DD0000">'Connect&nbsp;Error:&nbsp;'&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">connect_errno</span><span style="color: #007700">);<br />}<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
   </div>

   <div class="example-contents"><p>过程化风格</p></div>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$link&nbsp;</span><span style="color: #007700">=&nbsp;@</span><span style="color: #0000BB">mysqli_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">'localhost'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'fake_user'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'my_password'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'my_db'</span><span style="color: #007700">);<br /><br />if&nbsp;(!</span><span style="color: #0000BB">$link</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;die(</span><span style="color: #DD0000">'Connect&nbsp;Error:&nbsp;'&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">mysqli_connect_errno</span><span style="color: #007700">());<br />}<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
   </div>

   <div class="example-contents"><p>以上例程会输出：</p></div>
   <div class="example-contents screen">
<div class="cdata"><pre>
Connect Error: 1045
</pre></div>
   </div>
  </div>
 </div>


 <div class="refsect1 seealso" id="refsect1-mysqli.connect-errno-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.mysqli-connect.html" class="function" rel="rdfs-seeAlso">mysqli_connect()</a> - 别名 mysqli::__construct</span></li>
    <li class="member"><span class="function"><a href="mysqli.connect-error.html" class="function" rel="rdfs-seeAlso">mysqli_connect_error()</a> - Returns a string description of the last connect error</span></li>
    <li class="member"><span class="function"><a href="mysqli.errno.html" class="function" rel="rdfs-seeAlso">mysqli_errno()</a> - 返回最近函数调用的错误代码</span></li>
    <li class="member"><span class="function"><a href="mysqli.error.html" class="function" rel="rdfs-seeAlso">mysqli_error()</a> - Returns a string description of the last error</span></li>
    <li class="member"><span class="function"><a href="mysqli.sqlstate.html" class="function" rel="rdfs-seeAlso">mysqli_sqlstate()</a> - Returns the SQLSTATE error from previous MySQL operation</span></li>
   </ul>
  </p>
 </div>


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